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tv   [untitled]    September 19, 2010 2:30pm-3:00pm PST

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>> ladders shall not be let's than 18 inches >> if someone was applying for a permit. we would like at the occupant load and how many people are going to have to use this, and the building code has a table for calculating. i think we would look at home people would using it. >> every fire escape balcony 18 inches. >> i wanted to talk to the about the stand pipe. >> tell us what we got here. >> this is a dry stamp pipe.
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typically, the fire engine would stop here and hook up here. so on any floor, whichever floor, we can have water. like i say, this is even better than going to the building. our guy does a good job and makes sure the balcony is stable. it's so much nicer to be outside. you yell at the guy. we need more water and pressure. in my eyes, it's a better system. this one here is dry. some of them are wet. >> what's the difference between wet and dry? >> wet would be connected to the water system. typically on a smaller building, they would use this as their riser to be their sprinkler system inside.
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it's wet. it has 60, 65 pounds of pressure. it isn't really enough to fight the fire. but we already have water. we would still need the engine to hook up to get water pressure we needed to that floor. >> how much pressure do they need? >> well we aim at 100 pounds at whatever floor you are at. you lose 5 pounds for floor. it's up 15, you would lose 15 pounds. >> do we usually have a stand fire escape? >> usually. it's probably because they have so many stand pipes. and may be it was one of far ones we didn't see. it's a great thing.
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on residential, you always see it. >> any questions on stand pipe and connections? >> we're going to walk right around the corner to grady alley. >> we will take a little walk here. >> so somebody said that san francisco's fire department response time is really good. i understand that to be the case too. >> we pride ourselves on a 3-minute response. >> we have 42 stations. we do pride ourselves to get there in a hurry and getting to where we have to go. >> part of, there's a trade off. because we have such great response time, we are able to allow some types of
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construction and extremely high density that would not be allowed in building construction >> one of the things in the out lying areas, if you build a new house, single family dwelling, you need a sprinkler, they feel it's going to take, 8, 12 minutes and it's only 2 guys. whereas in san francisco, you get at least 4 right away and probably within 6 minutes, you have 12 people. you have the advantage, we in san francisco have not asked for that amendment. we just go with what the california building code says. >> the new california building code into into affect january
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1, 2009. and it relies on fire sprinklers. can you think of any? >> existing building, if people try to implement it. they may have to sprinkler their buildings. you can built the building bigger or more area. or bring your separation a little closer together. there's a lot of advantages to the designer. and i think we may see some of these buildings putting them in they they don't have to get the advantages. particularly the ones downtown. you try to put the sprinklers
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in and they get to take advantage of the code. >> the new code doesn't consider the post earthquake. we have an unfortunate loss of water pressure after an earthquake. the local jurisdiction are a little bit concerned about over reliance on sprinklers instead of fixed assets because of lost water. >> my main fire protection engineer, he's concerned and wants to implement if you have a tank in your building, you
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have the water supply, sprinkler system. they have to have some back up water already >> high rises need them. >> except, it's supposed to be 30 minutes for your most demands >> that's a lot of water. >> the minimum is 15,000 gallons. i think 25,000 was the last one i saw they were proposing. it's a pretty good size. >> all around san francisco we see cisterns as well for water supply. there's no one within sight here. but you can tell because right in the middle of an intersection, you see that. that's a symbol for an under
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ground system. >> we have a lot of them. we can draft out of those. we can put our solid hoses in there and actually suck some water out and put some pressure on it. and we have maps. the guys in the field know where they are. we had a while if you put a swimming pool in, you had to have a connection. that one is being deleted. it was putting too much on people for putting a swimming pool in. >> back to fire escapes, i thought it would be interesting to look down the street and see how many there are. you don't usually think about them when you look around the city unless you are looking at our fire escape repair people probably see.
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i hungry man sees nothing but restaurants. this particular building has residential uses and i think an apolistry shop. they would require a 5-year certification and they also need their annual maintenance. their fire escapes use this accordion ladder. is that what you call it? occasionally, we see problems where it comes down and there's something obstructing it on the ground. sometimes you even see awnings. >> when they come in, that's something we always check if they have a fire escape. now adays they use velcro.
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>> one thing we have here, lawrence mentioned, you need a door. if you notice here, each residential unit. these are probably each side is a different residential unit that's going out and it's a case where that code evidently allowed you to use a window. >> there's an exception and it's on page 5. opening for the fire escape. it can be a window and it's 29 by 59 and so on. there's an exception for residential building. and probably, i wouldn't be surprised this serves separate units. they both access the same fire escape out let, you can see the
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goose net. it's an exciting climb and there's a high rise. i think it's the hastings building and it's really top. it has a vertical ladder on top. you are 200 feet up. >> occasionally they have cornices that stick out. they get quite creative how they build them. >> the old ship where you have to climb up to the top. >> the maintenance guy did a good job. people often wonder why fire escapes don't pose a risk of being loose. they are required to penetrate in their structural system and be attached through the building to the inside. in a wood frame building, they actually, bolts have to go through and they have to have a washer and nut on the inside.
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i would have to have the whole wall removed. they are quite strong. >> we do and someone asked, what is it that you do. i start off by looking at it. is there rust where it meets the building. that's the first indicator. my primary trick is to pick the railing away from the building and see sturdy is it? does the shake the whole wall when i kick it out? otherwise it's rust or a trail of rust >> do you tighten it up? >> if it looks questionable if i go trying to tighten it, i could allow water and starts to rust out the bolt.
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that would be bad in the long run >> these are required to be rust resistant? >> yeah. i would hope they are galvanized. there are some made of regular iron. they rust as a complete system. everybody we replace is galvanized makes sense. you get coastal fog. in the mission district. it's dryer. there's less on the eastern than the western. it's good to have it painted. or replace that part and paint it. >> so our handout, page 5, 2.3.
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it shall constructed of reenforced concrete or hot galvanized steel. and i'm sure they need maintenance. they will rust. >> kind of a slow process. the galvanized coating turns white. so when we see that. we will wire brush it and cold galvanized it and do exterior point >> recently, i noticed the
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bolts and their diagonal bolts were looking very rusty, so we put our wrench on and it snapped right how far. we went on the inside of the building, with the property owner's permission and opened up the hole and there was the head of the bolt, the washer and we pulled that out with effort and it became the size of 2 or 3 toothpicks. >> water has been coming in. >> any time we do work through the skin, whether brick,
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masonary we do that to keep out the pests >> any place there is a bolt, you really need to calk or seal that. water will find it's way and it will corrode inside and you can't see it unless you do, as this gentlemen said, do thorough testing. because you can't see it. you can't see it. even small stuff like this will allow water to get in. this is not a structural hazard. >> any comments or questions? >> if you look at this fire escape, you notice the goose neck has been brought out. you have a bridge to cross. if you look at the bottom. it's going to be a real treat
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for firemen to go up is there. >> that's why i say, this is only for firefighters to use. >> give me a boost. >> you have to realize, the firefighter has an air pack and may be some tools to be walking out there. >> this is an interesting building. i want to point something out. can anybody take a guess as to why we have these 4 beams sticking out of the top? it used to have another story on it. i think it had to do with the enforcement of the ordinance. it was easier to remove than to upgrade the building. those are the elements that used to support the fire escape
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balcony, you see the parapet support and they replaced the goose neck ladder that went to the top and it goes over the parfet wall here. very interesting and they just finished doing a seismic upgrade. you can see the giant steel tube >> you see remnants where the second story used to be. >> okay. this is really interesting question here and that's how did the department of public work regulate things that stick out over the public sidewalk or road? this is public right-of-way and the sidewalk is also owned by the public. although the property owner has to maintain it. here we have things sticking out.
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in some cases, things encroaching have to get approval from department of public works. if it's 10 feet, you are exempt. but there are certain rules to follow. making sure you don't stick out. >> 10 feet and 3 feet out. it goes up 1 foot every time you go out so many inches. that's the regulations. so that means you have to increase the height. >> there's a limit to how far can you go out. and there's a really interesting, for those of you who know where the old stars is. hemlock alley. right near mcallister street. red wood alley. and it keeps going up and
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angling out until it's a couple of feet out. you can almost read the table as to how far it's allowed to encroach. the old stars restaurant. >> i thought we could take a quick look. look at the gigantic frame. this is the one they took the story off. this is the front. it used to have a fire escape above. >> and a second story. you see the enormous steel frame. it's such a little building. across the street is the self storage. you see the fire escape in front and it has to pass that awning. >> what are the regulations about attaching thing to a fire escape? it says available.
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>> nothing is allowed on the fire escape. >> i know a lot of people like to put their potted plants and turn them into a balcony. >> bbqs are a no no. it's supposed to be for fire response. many, many violations for that. >> one of the things, people always say, this is a hazard. you've don't you do something. how many of you have had to exit a fire escape in an emergency? it's rarely used and we have very few incidences.
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therefore, based on our history, epidemiologically. we don't have reason to believe they're not functioning. there's no reason. these are working just federal fine. >> it always works at least to get you out of the second floor. the last floor is easy. thank you for coming. our brown bag lunches continue and we invite you to join us. and we invite you to join us. thanks a lot.
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announcer: so, what's the biggest issue in america today? i don't think we're probably ever doing enough for our environment. the war in iraq religious yahoos freedom of speech i get angry about it, but it's like... ya' know, in my own apartment. i probably believe in all those causes, but i'm...i'm not really doin' anything.
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>> about four years ago, [inaudible] look at how beautiful this was. there is our relationship to the planet.
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these regions are the wealthiest, the most powerful. that really has impacted the planet. it is almost impossible now to go anywhere and had it really be completely dark. there are very few locations that you can find. that means our relationship to the sky, there is a way where we dominate the sky. we cannot see anything really. we are blinding ourselves in a way. >> you can look at the images, they are beautiful.
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when i started four years ago, there was a conversation about environmental issues that was very different. this is not being talked about in the way it is now. . this has just been like an amazing growth. i anticipate the project to be something that opens a dialogue to public interest in these ideas. so the work is really made to be seen in this environment. it's been show in museum, in gallery, but never in a public setting. and it's kind of ideal for both myself and the works to have this real dialogue with